Now that we are linking against OpenSSL we have valgrind issues on ubuntu 16.04

[frobware]

See: https://bugs.launchpad.net/ubuntu/+source/valgrind/+bug/1574437

[jdmnd]

From linked thread, instructions for building fixed version of valgrind from deb package.
https://robgolebiowski.wordpress.com/2016/08/19/valgrind-failing-on-ubuntu/